What is the definition or description of: pancreatic cancer?

Pancreatic Cancer: Cancer of the pancreas are fast growing abnormal cells. These can be adenocarcinoma that can grow quickly, difficult to diagnose at an early stage & only sometimes can be removed with surgery. Endocrine cancers tend to be slower growing & may produce hormones & are surgically removed. Cystic cancers also may have better success with surgery. All of these can be difficult to diagnose & treat.